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International Journal of Automotive Technology > Volume 11(5); 2010 > Article
International Journal of Automotive Technology 2010;11(5): 737-742.
doi: https://doi.org/10.1007/s12239-010-0087-0
Byungdo Kang1, B. YONG2, K. PARK3
1Korea Automobile Testing & Research Institute
2Kyungil University
3Kyunghee University
Due to rapid progress in LED (Light Emitting Diode) technology, LEDs have become increasingly prevalent in applications to automotive lighting. This paper studies recent trends of LED headlamps along with various experiments regarding photometric characteristics, glare, and visibility. Experimental results are compared to those of halogen and HID (high intensity discharge) headlamps. LED headlamps are found to be still inferior to conventional headlamps with respect to glare. However, many properties of LED headlamps (luminous intensity, beam width, energy efficiency, and design) are competitive with halogen and HID headlamps. The findings in this investigation will henceforth be reported to the Korean Motor Vehicle Safety Standard (KMVSS).
Key Words: LED headlamp, Photometric performance, Glare, Spectral analysis, Cut-off lin
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